Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a presença no jogo em casa do Dallas em 12 de maio?
 ###Tabelas: CREATE TABLE western_conference_finals (western_conference_finals_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Visitor VARCHAR, Score VARCHAR, Home VARCHAR, Decision VARCHAR, Attendance INT) CREATE TABLE michigan_51_indiana_0 (michigan_51_indiana_0_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Position VARCHAR, Starter VARCHAR, Touchdowns INT, Extra points INT, Field goals INT, Points INT) CREATE TABLE buses (buses_id AUTO_INCREMENT PRIMARY KEY, Number INT, Origin VARCHAR, Final destination VARCHAR, Frequency VARCHAR, Distance VARCHAR) CREATE TABLE banknotes (banknotes_id AUTO_INCREMENT PRIMARY KEY, Value VARCHAR, Color VARCHAR, Obverse VARCHAR, Reverse VARCHAR, First issued INT) CREATE TABLE list_of_the_most_populous_us_counties_sorted_according_to_the_mid-2011_official_estimate_by_the_uscb (list_of_the_most_populous_us_counties_sorted_according_to_the_mid-2011_official_estimate_by_the_uscb_id AUTO_INCREMENT PRIMARY KEY, Rank VARCHAR, County VARCHAR, State VARCHAR, Land area (km²) VARCHAR, Land area (mi²) VARCHAR, April 1, 2010 census VARCHAR, April 1, 2010 density (/km²) VARCHAR, April 1, 2010 density (/mi²) VARCHAR, July 1, 2010 official estimate VARCHAR, July 1, 2010 density (/km²) VARCHAR, July 1, 2010 density (/mi²) VARCHAR, July 1, 2011 official estimate VARCHAR, July 1, 2011 density (/km²) VARCHAR, July 1, 2011 density (/mi²) VARCHAR, Mid-2010 to mid-2011 change (Absolute) VARCHAR, Mid-2010 to mid-2011 change (%) VARCHAR, County seat or courthouse VARCHAR)  
SELECT COUNT Attendance FROM western_conference_finals WHERE Home = dallas AND Date = may 12